Since sharks are able to communicate with audio and visual signals, the use of sounds and coloured boards have become part of shark training routines (similar methods are used in dog training). One of the best techniques to achieve success in shark training is through using food. Here, the shark will see or hear a “target stick” that the keeper holds in their hand to indicate to the shark the command that food is available. The shark approaches the stick and rubs its nose against it while waiting to be fed. It should take no more than an intensive 3 month period of training for a shark to learn to respond to commands.